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Article
Influence of film thickness on topology and related magnetic interactions in Fe nanoparticle films
Fe nanoparticle (NP)-assembled thin films with different thickness were prepared by femtosecond-pulsed laser deposition using different deposition times. The proper selection of the deposition time allows to c...
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Article
Peculiar properties of nanogranular NixSi100-x magnetic films obtained by ultrashort pulsed laser deposition
The use of ultrashort laser pulses enables the deposition of films composed of mono-component nanoparticles exhibiting similar shape and size. Films made of nickel (Ni) and silicon (Si) nanoparticles have been...
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Article
Magnetic and structural properties of nanocomposite Co-Ni-Cr-Al-Y-N thin films
The relation between structural and magnetic properties of Co-Ni-Cr-Al-Y-N thin films deposited by reactive r.f. magnetron sputtering was investigated. A marked change in the magnetic behaviour of the films wi...
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Article
Influence of particle pre-orientation on elastomagnetic effect in a composite material of ellipsoidal Ni microparticles in a silicone matrix
The dependence of the elastomagnetic effect on the orientation of Ni ellipsoidal microparticles dispersed in a silicone matrix is investigated. When a volume strain is produced on the composite material in a f...
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Article
Thermal evolution of ferromagnetic metallic glasses
A traditional TG apparatus was modified by placing two permanent magnets producing a controlled magnetic field (TG(M): Magneto Thermogravimetry). This technique proved to be useful to study both structural rel...
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Article
Thermal evolution of Fe62.5Co6Ni7.5Zr6Nb2Cu1B15 metallic glass
Thermal evolution of Fe62.5Co6Ni7.5Zr6Nb2Cu1B15 amorphous alloy prepared by one-roll melt-spinning technique was studied by XRD and DTA. The crystallisation process, occurring in several steps, can be summarised ...
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Article
Co/Fe Multilayers as Planar Magnetic Nanocomposites
Co/Fe multilayers were electron beam evaporated in ultra-high vacuum and analyzed by Alternating Gradient Force Magnetometry, Magnetic Force Microscopy, Conversion Electron Mössbauer Spectroscopy, and Transmis...
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Chapter and Conference Paper
Co/Fe Multilayers as Planar Magnetic Nanocomposites
Co/Fe multilayers were electron beam evaporated in ultra-high vacuum and analyzed by Alternating Gradient Force Magnetometry, Magnetic Force Microscopy, Conversion Electron Mössbauer Spectroscopy, and Transmis...
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Article
Low temperature magneto-conductivity properties of micro-sized Ag/HD-PE metal/polymers
A composite material of a polyethylene matrix filled by a fine silver powder was prepared with different Ag contents and physical behaviours ranging from insulator to conductor. Ac differential magnetic suscep...
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Article
Temperature dependence of microstructure of Fe62.5Co6Ni7.5Zr6Cu1Nb2B15 magnetic alloy
Strips of Fe62.5Co6Ni7.5Zr6Cu1Nb2B15, prepared by rapid quenching from the melt, were annealed at different temperatures and studied performing Mössbauer and magnetoelastic measurements. By increasing annealing t...
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Article
Low-temperature anomalous magnetic properties of μ-sized Ag/HDPE composites
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Article
Magnetic, magnetoelastic and structural properties of Co82 P18, Fe80B13 Si4C3 and Fe73.5 Cu1Nb3 Si15.5B7 amorphous ribbons after consecutive heat cycles in vacuum
Amorphous ferromagnetic ribbons, with basic differences in production technique, in thermal stability and devetrification modality, were investigated to compare some of their magnetic, magnetoelastic and struc...
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Article
Crystallization of amorphous Fe73.5Si13.5B9Nb3Cu1
A study is reported on the devitrification behaviour of the amorphous alloy Fe73.5Si13.5B9Nb3Cu1. Samples of the studied glass underwent isothermal and non-isothermal heat treatments in a thermal analysis appa...
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Article
Dynamic stress sensitivity of Fe73.5Cu1(Ta or W)3Si15.5B7 ribbons after heat treatments in vacuum
The effects of heat treatments in vacuum on magnetic permeability, Young's modulus and magnetoelastic wave amplitude were investigated in the amorphous ferromagnetic alloys Fe73.5Cu1Ta3Si15.5B7 and Fe73.5Cu1W3Si1...
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Article
Magnetoelastic effects at the interface of CoP nanostructured multilayers
The role of magnetoelastic energy to determine the causes which affect the magnetic anisotropy are reviewed. The simple model used to describe magnetostriction in the new nanostructured materials is reported. ...
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Article
Structure dependence of the magnetic-susceptibility behaviour at low magnetizing field
The magnetic susceptibility during hysteresis cycles was measured in both amorphous and crystalline metallic ribbons. The analysis of the dependence on magnetizing field evidences a different behaviour due to ...
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Article
Thermal evolution of Co1−x-Px electrodeposited ribbons and its influence on the electrical resistivity
Co-P ribbons have been obtained by electrodeposition on aluminium substrates. The effect of changing the current density (in the range 8–19 A dm−2) and the H3PO3 concentration on the nature of the phases present ...
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Chapter
Co-P Layers and Multilayers Produced by Electrolytical Deposition : Structure, Magnetic and Magnetoelastic Properties
The actual knowledge on Co-P electrodeposited alloy is reviewed. The differences among the experimental conditions of production, and their influnce on the obtained material as well, are discussed. Recent resu...
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Article
Stress sensitivity coefficient in polycrystalline and amorphous ferromagnetic materials below room temperature
The piezomagnetic coupling coefficient (the «stress sensitivity») is quantitatively investigated below room temperature and a comparison is made among polycrystalline samples and amorphous ones. The technique ...
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Article
Laser nonuniform annealing of amorphous metal sheets, effects on structure and magnetization
A previos thermal model for the heat treatment of a little metal ribbon, moving under a broad laser beam with Gaussian intensity distribution, is elaborated in order to apply it also in the opposite experiment...
